Refrigerating apparatus



H. A. PARKYN.

REFRIGERATING APPARATUS.

APPLICATION FILED. FEB. 27. 1919.

Patented Jan. 31, 1922.

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34 45 Z521 B3 E JZ?,

H. v. PARKYN.

BEFRIGERATING APPARATUS.

APPLICATION FILED FEB. 27| I9I9 V I 1,405,319; Patented Jan. 31, 1922;

3 SHEETS-SHEET 2.

H. A. PARKYN.

REFHIGERATING APPARATUS.

AFPLlcATxoN msn FEB.27,1919.

1,405,319, f Patented Jan.31.,192`2.

3 SHEETS-SHEET 3.

PATENT' ermee.

HERBERT A-PARK YN, or CHICAGO, ILLINOIS.

REFRIGERATIG APPARATUS.

To all whom it may; conce/m l Be it known that I, HERBERT A. PARKYN,

la citizen of the ,United States, 'residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful fImprovement in `Refrigerating Apparatus,

of which the following is a specification.

pressed refrigerant to liquefied condition.

One of my objects is to provide a slmple and economical arrangement for the cooling of the lcompressed refrigerant by the use of air alone, to place it in the desired condition for introduction into the refrigv erating coil. Another object is to provide a closed air-circuit refrigerating system which will be simple and economical of construction and compact, and shall be relatively inexpensive` to operate. Another objectis to provide a refrigerating unit, more especially for domestic use, which may be furnish-ed as a` unit with all of the parts of the refrigeratin -apparatus in fixed op erative positions, or ready application to refrigerators or ice boxes, as commonly provided, without requiring'more than the cutting of openings in a wall ofthe box, theA refrigerating apparatus extending entirely exterior of the box, to the end that not only shall the box serve in `a highlyv effective manner as a refrigerating means, but the spaceusuallyv occupied by the ice may be utilized as storage space for material, such as food stuff, to be cooled.`

Referring to the accompanying drawings,

, Fig. 1 is a view in vertical sectional elevation of an ice box of common form with my improved refrigerating unit applied thereto; Fig. 2 is,7 a section taken at the line 2,-2 on Fig. 1 and-viewedv in the direction of the arrows; Figures 3 and 4 are sections taken at the lines 3-3 and 4-4 and. viewed in ,the directions of the respective arrows;

y(and Fig. 5, a section taken at the line 5 on` Fig. 1 andviewed in the direction of j the arrow.

In accordance with the preferred, illustrated, embodiment ofmy invention shown ng provided for'fapplication to a common specification of Letters Patent.

Patented Jan. 31, 1922.

lApplication led February 27, 1919. Serial No. 279,579.

form of ice-box of the single, air-circuit variety, namely, one involving the introduction of cold air at one lside of the box, its passage downwardly and-across to the opposite side of the box, and its discharge from the box at the last-referred-to side, I prov1de a base 10 which, in the 'form shown, is a hollow metal member affording the chainbers l1 and .12, this base being provided preferably for application to the top of the ice-box to which it is to be applied, where the invention is provided for application to eratingmedium.

The base 10 supports the operating parts of the refrigerating apparatus which, in thecaseI of the air-cooledV machine illustrated,

ice-boxes built to employ ice as the refrigcomprises the following described elements :l

a driving element represented at 13, and

lwhich, by preference, is an electric motor,

compressor is submerged, the outlet `of the compressor, and which is represented at 17, discharging into the compressor chamber 15, the outlet 15a of which is connected with one end of a condensing coil 18. The 'coil 18 is located -in a casing 19, in which the com- `pressor chamber 15 is located, this coil be'- ing in the form of yan open spiral located between the wall of -the casing 19 and an annular, `concentrically disposed, partition 2() in the latter and surrounding the chamber 15. The dischar e end of the coil 18 leads into av liquee refrigerant receiver 21 located in the chamber 12 in the base 10F` and held in place by a strap 22 secured to the base, with insulating material, represented at 23, surrounding the receiver 21.

The apparatus shown also involves a refrig.

erating coil 24 located in the chamber 11 in the base, this coil being connected atbne end with an expansion valve 25 1n communication with the receptacle 21, and vat its opposite, discharge-end 26l leading into the inlet of the compressor 14.

The shaft 13a is provided( with a fan 27 and with a blower 28, both' rigidly secured to this shaft.- The fan 27 is located 1n an opening 29 in the casin 19 and serves'to draw air throughthis openin and force it. through .the spaces between he vano'usturns of the condenser coil 18, from which it flows upwardly in the casing 19 and thence downwardly on the inside of the partition 20 and out through openings 30 in the base of the compressor-chamber 15, and

-into the base through an opening 31 The blower 28 may be of any suitable construction. As shown, it is composed of thel vane-equipped member 33, fixed on the shaft 13a, and a casing 34having double walls spaced apart with insulation 35 therebe-4 tween, mounted on the'base 10, the casing 34 being connected at its inlet 36 with the warm-air return of the refrigerator-box, and

at its outlet 37 opening into the chamber 11 in the base 10 to discharge the warm air against the refrigerating coil 24:

The compressor of the particular apparatus illustrated involves a plurality of intermeshing gears 38 and 39 mounted on the shaft 13a and the shaft 40, respectively, whichare journaled in the casing 41 of the compressor, this casing having a gas-inlet port Vat one end, in communication with the outlet 26 of the refrigerating coil 24, and in communication with a channel 42 in the casing 41, and extending lengthwise of the gears 38 and 39 and opening into the intermeshing portions thereof at one side of the centers of the shafts 13a and 40, the outlet 17 of the compressor and represented at 43 being in communication (in a .manner not shown) with the intermeshing portions of the gears 38 and 39 at the endsof the latter at the side of the centers of the shafts 13a and 40 opposite that at which the channel 42 extends. By preference the pipe 17 extends above the level of the oil bath 16, this bath affording a supply of lubricant through the v oil inlets 41a in the casing 41, to the intermeshing gears to lubricate these parts and produce an oil-seal, as is known in the art.

The space 11 in which the coil 24 is locatedv 1s preferably lined with' insulation 45,

the upper portion of the space 11 contain-v ing an opening 46 communicating with the outlet 37 of the lower casing 34, and its lower end contalning an outlet 47, through .which the air drawn from the ice-box into the inlet 36 of the blower and thence cooled by Contact with the coil 24, discharges.

1n the lnstalling' of the apparatus for use in connection with ice-boxes builtfor use with .ice-as a refrigerating medium, openings forming passageways, are cut inthe cover of the box for registration with the outlet of the chamber 11 and the inlet of the blower, these openings in the cover of/ ,the box communicating with the portion thereof inrecepire resented at 100 and having a single warmair return and in accordance with this arrangement the top 101 of the box has openings 48 and 49 cut therein to register with the outlet .47 and inlet36, respectively, these openings being preferably lined by pipe sections 50 and 51, respectively. rl`he openings 48 are located in the top of the icechamber portion 102 of the box and the openings 49 are located inthe top of the warm-air-return portion of the box.`

ln the operation of the structure, as shown, the compressor 14, driven by the motor 13, compresses the gasified refrigerant entering it through the pipe 26 from the coil 24, discharging it into the compressor chamber 15, from whence it passes into the condenser coil 18, wherein it condenses and thence flows as a liquid into the receiver 21, the liquified refrigerant dicharging into the refrigerating coil 24 through the expansion valve 25 in accordance with common practice. The fan 27 simultaneously driven with the compressor and at a rapid speed, by reason of its direct connection with the shaft 13a, operates to enchance the cooling of the compressed gasiied refrigerant .in its passage through the compressor chamber 15 and coil 18, the rotationV of this fan on the shaft of the rotary compressor and motor4 being at such speed that the desired cooling effect for causing the apparatus to continuously operate under widely varying temperature conditions, is effected. Furthermore, the mounting of the rotary element 33 of the blower directly on the shaft 13 causes this element to be rotated at relatively great speed for effecting the maximurm' cooling action of a predetermined volume of air circulating through a closed system, the warm air being' drawn upwardly through the lefthand side. of the refrigeravloer, through an opening 55 in the front wall thereof, these guides being located within the confines of the coil 24.

While 1 have illustrated and described a particular construction embodying my ,in-

vention, ll do not wish to be understoodas intending to limit it thereto, as the same' may be variously-modified and altered without departing from the spirit of the invention, itbeing my intention to claim my in- 'vention as fully and completely as the prior state of the art will permit.

cure by Letters Patent is:

l. A refrigerating unit adapted to be used with a refrigerator box having an opening therethrough communicating with the portion of the air-circulation course thereof through which the cold air passes, and coinpiising a base, a compressor and driving means therefor on said base, a condenser and refrigerating coil on said base, said unit containing a passage exterior of said box.

and communicating with said opening for conveying air into a position where it will be cooled by said refrigerating coil and pass thence through said opening into the box, and a power-device for forcing the air through said passage.

2. A refrigerating unit adapted to be used with a refrigerating box having openings therethrough communicating, respectively, with the portions of the air-circulation course thereof through which the cold air and warm air passes, and comprising a base, a compressor and driving means therefor on said base, a condenser and re-frigerating coil on said base, said unit containing a passage exterior of said box for communication at its opposite ends, respectively, with the said openings in the box,'said passage being so arranged relative to said refrigerating coil that air in traversing said passage will 'l be cooled by said coil, and means in said passage for effecting forced circulation of the air therethrough.

3. A refrigerating unit adapted to be used with a refrigerator box and comprising a base, a compressor and driving meanstherefor on said base, a condenser on said base, said base containing a passage for air, a revfrigerating coil located in said passage, and

means for forcing air through said passage to produce a forced circulation. l

4. In refrigerating apparatus, the combination of a rotary pump for compressing the gasiiied refrigerant, a shaft connected there'- with, a motor directly connected with 'said shaft for driving it, acondenser for the gas compressed by said pump, a refrigerating coil in communication with said condenser,

5. In a refrigerating system, the combination of a rotary pump for compressing the gasiiied refrigerant, a shaft connected therewith, a motor directly connected with said shaft for driving it, a condenser for the gas compressed by said pump, a fan on said shaft for causing air to be driven against said condenser, a refrigerating coil connected withv said condenser, and a blower on said shaft for forcing' air into a position where it will be cooled by said refrigerating coil.

6. In refrigerating apparatus, the combination with a refrigeration chest enveloped by a heat-insulating medium, of a passage located exteriorly of said chest and opening at its ends through said insulating medium into `the interior of said chest at different points therein and .forming a connectien exterior ofsaid chest between the warmair portion of the chest and the cold-air portion thereof, whereby a closed air-circulating course is provided, artificial refrigerating means located exteriorly of said chest and said insulating material and arranged to cool the air in said closed course, and means in said passage for producing forced circulation of the air through said closed course.

7 In refrigerating apparatus, the com*- bination'with a refrigeration chest envelopedl said chest and said insulating material and arranged to cool the air in said closed course,

a blower' in said passage for producing l forced circulation through said course, and a power-device for operating said' blower, located exteriorly of said course.

HERBERT A. PAHR'KYN. 

